EduardoIbarra

Another question, does the jack conector have 3 channels (stereo AND microphone support)? Could I connect one of those headsets that have a built in microphone and get audio input and output working at the same time?

I have successfully connected microphone to Cubietruck, but unfortunately it requires resoldering of two tiny SMD resistors.

I resoldered following resistors:- resistor from R169 to R168 - this will switch IR-RX pin to VMIC pin- resistor from R171 to R170 - this will switch LINEINL pin to MICIN1 pin

I have found circuit in one of the Olixuino board hardware shematic which also use Allwinner A20.To connect my microphone I simplified this a lot to use a minimum amount of additional electronic parts (I want to add additional jack port to original Cubietruck case, so I don't have a lot of space to do it). I attached simply connection circuit to this post.